Final answer:
To find the number of formula units in a 5.53 mol sample of NH4NO3, multiply the number of moles by Avogadro's number. In this case, there are approximately 3.329 × 10^24 formula units.
Step-by-step explanation:
To calculate the number of formula units in a 5.53 mol sample of NH4NO3, we need to convert the moles to formula units. The number of formula units can be determined using Avogadro's number, which states that 1 mol of a substance contains 6.022 × 10^23 formula units.
Therefore, to find the number of formula units in 5.53 mol of NH4NO3, we multiply the number of moles by Avogadro's number:
Number of formula units = 5.53 mol × 6.022 × 10^23 formula units/mol = 3.329 × 10^24 formula units